DTC B1382 Device Ignition ACC Circuit Low. Chevrolet PJJ 2000

For 1990-2009 cars
Body Control Module Components
Powers, Grounds and Class 2 Data Lines

### Circuit Description

Circuit 43 is the accessory input to the body control module (BCM). The input can be either in the on or off position from the ignition switch. If the BCM senses that the accessory input is inactive, DTC B1382 is set.

### Conditions for Running the DTC

The engine is running for at least 30 seconds.

### Conditions for Setting the DTC

The BCM does not detect the accessory input after 30 seconds.

### Action Taken When the DTC Sets

DTC B1382 is stored in the BCM memory.

### Conditions for Clearing the DTC

• | DTC B1382 clears when the code setting condition is no longer present.

• | All BCM history codes will be cleared after 100 ignition cycles (from OFF to ON) with no current codes active during the 100 ignition cycles.

### Diagnostic Aids

If the DTC is a history DTC, the problem may be intermittent. Perform the tests shown while wiggling the wiring and connectors. This can often cause the malfunction to appear.

### Test Description

The numbers listed below refer to the numbers on the diagnostic table.

1. This step determines if CKT 43 is shorted to ground.

2. This step determines if the BCM is internally shorted.

3. This step determines if voltage is supplied from the battery to the BCM fuse.

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you perform the Body Control System Diagnostic System Check? | Go to Step 2 | Go to A Diagnostic System Check - Body Control System

2

1. Install a Scan Tool.
2. Turn ON the ignition, leaving the engine OFF.
3. With the Scan Tool, observe the ACCESSORY input parameter in the BCM data list.

Does the scan tool display ON?

Go to Testing for Intermittent and Poor Connections in Wiring Systems

Go to Step 3

3 | Inspect the BCM fuse. Is the fuse open? | Go to Step 4 | Go to Step 6

4

1. Connect a test lamp between the BCM fuse terminals at the IP fuse block.
2. Turn ON the ignition, leaving the engine OFF.

Does the test lamp illuminate?

Go to Step 5

Go to Testing for Intermittent and Poor Connections in Wiring Systems

5

1. Turn OFF the ignition.
2. Disconnect the BCM connector C2.
3. Turn ON the ignition, leaving the engine OFF.

Does the test lamp still illuminate?

Go to Step 8

Go to Step 10

6

1. Remove the BCM fuse.
2. Turn ON the ignition, leaving the engine OFF.
3. Probe both fuse terminals for the accessory circuit at the IP fuse block with a test lamp connected to ground.

Does the test lamp illuminate for one of the terminals?

Go to Step 7

Go to Step 9

7 | Test the accessory circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 11
8 | Repair the short to ground in the accessory circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the action? | Go to Step 12 | --
9 | Repair the open in the ignition feed circuit to the BCM fuse. Refer to Wiring Repairs in Wiring Systems. Did you complete the action? | Go to Step 12 | --
10 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 11
11 | Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Important: Perform the setup procedure for the BCM. Refer to BCM Programming/RPO Configuration. Is the repair complete? | Go to Step 12 | --

12

1. Use the Scan Tool in order to clear the DTCs.
2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK